Glass Corrosion in ADD Patented by Reckitt

02.04.13

US Patent No. 8,216,990 B2; Reckitt Benckiser has patented a method of protecting glassware from corrosion in an automatic dishwashing process. It entails placing a composition comprising zinc and bismuth into a dishwasher and washing the glassware in the presence of that composition. The mass ratio of zinc to bismuth is 1:100 to 100:1.